21637021

素因数分解:

$7^1\times {\mathrm{83}}^1\times {\mathrm{167}}^1\times {\mathrm{223}}^1$

素因数の和:480

約数の個数: 16

約数和(自身を含む): 25288704

約数和(自身を除く): 3651683

約数列:

[1, 7, 83, 167, 223, 581, 1169, 1561, 13861, 18509, 37241, 97027, 129563, 260687, 3091003, 21637021]

約数ペア:

[(1, 21637021), (7, 3091003), (83, 260687), (167, 129563), (223, 97027), (581, 37241), (1169, 18509), (1561, 13861)]